Form for concrete floors or walls.



along their side edges-with downwardly pro- TedgeS, 5

their ends terminating at the sides of the joists and supported upon the bearing strips, the said plates overlapping at their side and the upper edges of the joists and the upper surfaces ofthe lagging plates lying at substantially the same level.

9.. In combination in a forr'n for flat con# crete bodies, a pair of parallel joists, a pair ,of opposing bearing strips, lying along the inner faces of the joists, and a pluralityof sheet metal lagging plates with their ends terminating at the sides ofthe joists and with their upper surfaces in substantial alinement with the upper surfaces of the joists, the said lagging plates being provided jecting flanges engaging the bearing strips, and one of the bearing strips being notched i 4 crete bodies,

to engage the flanges and'space the plates.'

3. In combination in a form for iiat cona pair of parallel joists, a pair of o osinO bearin stri s lyin' alongthe innei'mfacesbo-the-iliists lind eacgh provided with a plurality of'paced notches, and 'a plurality of sheet metal lagging plates with their ends terminating at the sides of the joists and each provided with a liange fitting into the said notches. fl. In combination in a form for iat concrete bodies, a pair of parallel joists` a pair of opposing bearing strips lying along the inner faces of the joists and each provided with a plurality of their ends terminating at the Sides of the joists and each provided ,with a flange tting notches, and a plurality ging plates with their ends terminatin spaced notches, and a v plurality of sheet metal lagging plates with into the said notches, the said bearing strips having their upper edges below the upper edges of the joists av distance approximately equaltov the thickness of the lagging plates.

5. In combination crete bodies, a plurality of purlins, a pair of `jeists extending transversely of the purlins bearing strips lying along the inner faces of the joists and resting upon -the purlins and each provided with a plurality of spaced of sheet metal lagthe sides of .thejoists and each provided with" a flange fitting into they said-notches,

the said bearing strips beingl detachably secured to the sides of the joists.

In testimony whereof I have hereunto.

signed my name in the scribed witnesses. p

WVILLIAM MAYO VENABLE.

.Witnesses CHAs. BAYNOLDT, C. F. KING.

presence of two subin a form yfor flat con- 

